“It’s a privilege to meet so many big names and teach them how to pour a pint”

Fergal Murray

“Whether it’s a man in China, a woman in Australia or an 18-year-old lad in France, they all enjoy it for the same reason and I find that wonderful.”

Fergal joined Guinness as a research chemist but soon turned his hand to brewing.

His job has seen him cross paths with celebrities and royalty and he recently shared his knowledge with Tom Cruise and Barack Obama.

But he admits he never felt so nervous as when he had to play barman for the Queen – even though she did not touch a drop.

Dubliner Fergal said: “It was amazing to have Her ­Majesty at the Guinness Storehouse, although I don’t think I have ever been under so much pressure to deliver a perfect pint. The eyes of the world were on me.

“She drank it with her eyes. The visual impact was all she needed.”

RUBBING SHOULDERS: Murray has also met US president Barak Obama on his travels [GETTY]

He added: “It’s a privilege to meet so many big names and teach them how to pour a pint.

“Tom Cruise was my favourite. He is a Guinness fan and crafted a great pint, which he really enjoyed.”

Despite spend-ing his working life tasting the stout Fergal still enjoys a pint of it in a cracking pub.

He says: “The opportunity to get out is getting shorter these days, what with family and stuff like that. But when you get a request to meet someone for a pint it is very hard to say no.

“There’s nothing better than a great pint in a great pub.”

You can find your perfect pint of Guinness in thousands of pubs across GB as part of Guinness' Quality Accreditation programme. Look out for the Quality Accreditation plaque behind the bar which guarantees you are being served a quality pint of Guinness.